Three-year old jamie is a healthy, active child. based on this information, his body is in nitrogen balance. activated positive pediatric inverse

I think based on the information, his body is in positive nitrogen balance. Positive nitrogen balance is associated with periods of growth, hypothyoidism, tissue repair, and pregnancy. It means that the intake of nitrogen into the body is greater than the loss of nitrogen from the body, therefore, there is an increase in the total body pool of protein. Nitrogen is an important element in the body; for example all amino acids contain nitrogen and are building blocks that make up the proteins.

enzymes loose their form in both unsuitable ph and temprature.

Explanation:

at very high tempratures enzyme molecules denatures due to high speed movements, at low tempratures enzymes works too slow to be useful enough.

low ph solotions contain lot of H+  and high ph solutions have few H+ , and the number of these H+ ions have polar effects on enzymes.  some Enzymes like pepsin works perfect in acidic environment ( ph=2)  while others might work at  high ph  or average ph( like Trypsin  works well at ph=7).